Browser JSGuard extension offers protection against malicious HTML & JavaScript attacks

When we are browsing on the Internet, our computer is exposed to various malicious attacks. One of the most common online threats are the malicious and suspicious web pages. These malicious web pages look like any other web page built using HTML or JavaScript. Hence, many times these go undetected and ultimately harm the computer. To tackle such attacks, C-DAC, India has created an add-on for Chrome and Firefox browsers. This is Browser JSGuard helps protects your PC from malicious HTML and JavaScript attacks.

A PC is attacked by these malicious websites by exploiting vulnerabilities in the web browser. The attacker thus gets control over the  Operating System. Once the attacker compromises the user’s web browsers, the browser can be instructed to visit the attacker’s website by using a number of redirections. Thus, any kind of malware can get installed on user’s computer without the knowledge of the user. This kind of attack can be efficiently avoided with Browser JSGuard add-on.

Browser JSGuard for Chrome and Firefox

Browser JSGuard is launched by Centre for Development of Advanced Computing. This organization is the premier R&D organization of Government of India. C-DAC has created this add-on for both Chrome and Firefox browsers. Some of its features are as follows:

  • Content/Heuristic based web malware protection
  • The add-on alerts the user on malicious web pages
  • It also provides detailed analysis of the web page (You can see the analysis by clicking on the icon present in Add-on bar)

How to install Browser JSGuard for Chrome and Firefox browsers

JSGuard stands for JavaScript Guard. After the installation on your Chrome or Firefox browser, a small icon appears on the right side of your browser’s URL window. The icon looks as follows:

Browser JSGuard

If you hover over this icon, a message ‘Webpage Behaviour Report’ is displayed. Open the desired website and click on this icon to see the report for the selected website. The report window looks as follows:

Browser JSGuard for Chrome and Firefox

You will be able to see various details such as hidden iframe redirections, unauthorized redirections, encoded JavaScript, external domain requests, and trackers. Click on each of these headings to see further details. (Like in above image, for Unauthorized redirections, the report shows its analysis as ‘No unauthorized redirections’). In case there is a malicious website, the report may display its analysis as follows:

Browser JSGuard

You can also give feedback for this report by clicking the link at the end of the report. Browser JSGuard It is among the several anti-malware tools launched by C-DAC India.

Browser JSGuard add-on for Google Chrome can be downloaded from To install it on Mozilla Firefox, visit And do give your feedback below, for the benefit of other users.

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Ankit Gupta is an Engineering graduate and an MBA post graduate. He brings with himself 5 years plus global writing experience on technology, travel & finance. Apart from having a great interest in following Microsoft, he also has a deep liking for wild life and travels to various wildlife conservatories to be with nature. He suggests that you always create a System Restore Point first before installing a new software, and be careful about any third-party offers while installing freeware.